Saving probe tables in a parametric study
Hi, I am using several probes to plot and also write the data to a table during solving. With the new version, since we have the option to save the table in the model and as a separate file as well, I...
View Articleexport error
Hi I run a simulation and tried to export the results. I am getting the following error . Unknown property, property: spacevars. what does it mean?
View ArticleStationary study of a beam immersed in water
Hello Everyone, I am trying to analyze stationary behavior of a single-crystal silicon cantilver beam which is immersed in water. To do this, I have used Fluid structure interaction module. I apply a...
View ArticleHow to check mass balance?
Hi, I was wondering if there is any way to check the mass balance in Comsol? It's kind of hard and time consuming to calculate the mass balance by hand, so does Comsol provide it for users by default?...
View ArticleHow to solve a general PDE without any physical meaning?
I am a learner for COMSOL. I am trying to solve a general PDE without any physical meaning. If anyone could help me on this or show me any tutorial, I will appreciate it very much.
View ArticleNew Book on Chemical Engineering Computing Available
Hi there, I just want to share with all of you that a new book about chemical engineering computing has recently been released. Written by Bruce Finlayson, it's the second edition of his book...
View ArticlePolysilicon vs. P-Silicon
Hello everybody I have a question regarding materials in Material browser. Is P-silicon (Polycristalline) equal to polysilicon? Because we have polysilicon too so I am not sure which on I should...
View Articlestructural mechanics in comsol 4.2
Hello sir/madam, Can i do electromechanical analysis in 4.2 version for cantilever beam type structures
View ArticleImporting the solved Soltion
Hi, I have solved a solution for a 3D object, I'm going to import this solution for another solver so that I could be able to use the results for the solution 1 and save running time. Is there anybody...
View ArticleWhere is the Curl operator in the PDE physics?
Hello, I tried to modify the PDE from the rotating machinery physics a little and wanted to define it in the PDE physic. The problem I have is that I can't see any curl operators in the coeficient or...
View Articledifference between segregated and fully coupled solver comsol
Hi folks, I am trying to understand the advantages of each of these solvers, and when to use or the other. I looked through the docs but I am left with the same doubts. Can anyone point out the main...
View ArticleHeat transfer simulation result is much larger than experimental result
I modelled the heat transfer through a hollow brick to calculate the equivalent thermal conductivity. So general heat transfer and weakly compressible Navier-Stokes modules were taken to build the...
View ArticleMagnetic force imposing on magnetic fluid in 3D magnetostatic field (no...
Hi Everyone I try to do with a simulation of magnetic fluid imposed on magnetic force in magnetostatic field (no currents), but the results show that there seems to be no magnetic force on magnetic...
View Articlecut point graphics
Hi The cut point plot in my 2D model shows the point as a huge red dot (much bigger than the domain size). How can I reduce the size of this dot so it sits nicely inside the domain? Thanks David
View ArticleCreating an external Magnetic Field
Hi, I am trying to model a superconducting wire under magnetic field. Since the design of a SC wire includes a circular variable dependency of the conductivity and the current density, I have to use...
View ArticleBUG in Comsol 4.3
Hello, When we do a remeshing simulation, Comsol generates several "Deformed Configurations #" in the Mesh. The problem is, when you redo the calculation, the number # of Deformed Configurations...
View ArticleIs it real to simulate Full Lightning Impulse 1,2/50 us in Comsol 4.0?
Hi I simulate electric fields in high-voltage switchgear. In my models I use AC/DC Module Electrostatics (es). If the electrode is under high potential, the boundary condition for that electrode will...
View ArticleGeometry variation within Time-Dependent solving.
Hello, I was wondering if it's possible to change geometry according to time ( via internal or external function(MatLab)) ? ie: Making a block depth function of time.
View ArticleElectromagnetic Periodic Boundary Condition
Hi all, I am trying to simulate a 2D periodic electromagnetic structure using periodic boundary condition in comsol multiphysics. the whole structure is 3D but it has 2D periodicity in x and y...
View Articleuse modulo for periodic step function
Hi! I want to create a periodic step function to control the input concentration of a contaminant in an aquifer. I want the concentration to be 1 for 3 months and 0 for the rest 9 months. I have...
View Article